Starting on or about Monday, Sept. 26, and continuing for approximately three weeks, the left lane of the westbound Dulles International Airport Access Highway (DIAAH) between mile markers 1.1 and 0.6 (between Route 28 and the Ramp G overpass) will be closed for shoulder widening. The two right lanes in this area will remain open to traffic.

Drivers should exercise caution, pay attention to barriers and signage and remain alert because slow-moving vehicles and equipment may be entering and exiting the work area.

All work is weather dependent and subject to change.

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A 24/7 emergency hotline is available for Dulles Corridor Metrorail Project construction-related issues: